Line Integral

Find the exact value of http://forums.cramster.com/Answer-Board/Image/cramster-equation-20051129112586326885897811250007777.gif [Broken] where http://forums.cramster.com/Answer-Board/Image/cramster-equation-20051129110356326885883583125005816.gif [Broken] and C is the line segment from (1,2,1) to (6,4,5).
i, j, k are unit vectors
So far all i have done is drawn in the line segment on a 3D graph.. Look at the URLS for the integral and the F(x,y,z)

Find the exact value of http://forums.cramster.com/Answer-Board/Image/cramster-equation-20051129112586326885897811250007777.gif [Broken] where http://forums.cramster.com/Answer-Board/Image/cramster-equation-20051129110356326885883583125005816.gif [Broken] and C is the line segment from (1,2,1) to (6,4,5).
i, j, k are unit vectors
So far all i have done is drawn in the line segment on a 3D graph.. Look at the URLS for the integral and the F(x,y,z)

OK i worked off of what you got and i got
http://www.freemathhelp.com/forum/mimetex/pictures/d1183703930c2d1a7c5a37255ca42e49.gif [Broken]
But this integral looks VERY hard to solve

A few hints:
For the first term, use integration-by-parts, and for the third term, complete the square in the form: [itex]K\sqrt{(t+a)^{2}+b}[/itex], where K,a,b are appropriate constants. Dependent upon the sign of b, we may write [itex]b=\pm{c}^{2}[/itex] where c is some constant.